In endeavor itself there is a certain dynamic entertainment, affording an illusion of useful purpose. With achievement the illusion is dispelled. Man's greatest accomplishment is to produce change. The only good in life is study, because study is an endeavor that never reaches fulfillment. It busies a man to the end of his days, and it aims at the only true reality in all this world of shams and deceits.

Author: Rafael Sabatini